Features and Scope: low mechanical strength, ductility, toughness, cold forming molding condition is easy, easy machining, welding performance is good, to improve the surface hardness of carburized and cyanide can be handled. Intensity is not high for the manufacture of welded, cold extrusions, and forgings and carburizing parts such as bolts, washers, separators, such as Shell.

Chemical Composition: Carbon C: 0.08 ~ 0.13 ,Si Si: 0.15 ~ 0.35, Manganese Mn: 0.30 ~ 0.60, S S: ≤ 0.030 ,P P: ≤ 0.030 ,Chromium Cr: ≤ 0.20, Ni-Ni: ≤ 0.25 ,Copper Cu: ≤ 0.25

Mechanical Properties:
Tensile strength σb (MPa): ≥ 335 (34)
Yield strength σs (MPa): ≥ 205 (21)
Elongation δ5 (%): ≥ 31
Reduction of area ψ (%): ≥ 55